to prepossess any one in favour of some person or thing that does not deserve it, so far as that he cannot easily be disabused.—The word infatuate comes from the Latin fatuus “fool;” of jari, “to speak out,” which is borrowed from the Greek εκαί, whence εκάρη, which signifies the same with εκάρη in Latin, or prophet in English; and the reason is, because their prophets or priests used to be seized with a kind of madness or folly, when they began to make their predictions, or deliver oracles.

The Romans called those persons infatuiati, who fancied they had seen visions, or imagined the god Faunus, whom they called Fatuus, had appeared to them.